package com.heima.model.common.dtos;

import com.alibaba.fastjson.JSON;
import com.heima.model.common.enums.AppHttpCodeEnum;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 通用的结果返回类
 * @param <T>
 */
public class ResponseResult<T> implements Serializable {
    //废弃
    private String host;
    //错误编码 AppHttpCodeEnum中code
    private Integer code;
    //错误消息 AppHttpCodeEnum中msg
    private String errorMessage;
    //返回结果 返回单个数据/返回列表
    private T data;

    public ResponseResult() {
        this.code = 200;
    }

    public ResponseResult(Integer code, T data) {
        this.code = code;
        this.data = data;
    }

    public ResponseResult(Integer code, String msg, T data) {
        this.code = code;
        this.errorMessage = msg;
        this.data = data;
    }

    public ResponseResult(Integer code, String msg) {
        this.code = code;
        this.errorMessage = msg;
    }

    public static ResponseResult errorResult(int code, String msg) {
        ResponseResult result = new ResponseResult();
        return result.error(code, msg);
    }

    public static ResponseResult okResult(int code, String msg) {
        ResponseResult result = new ResponseResult();
        return result.ok(code, null, msg);
    }

    public static ResponseResult okResult(Object data) {
        ResponseResult result = setAppHttpCodeEnum(AppHttpCodeEnum.SUCCESS, AppHttpCodeEnum.SUCCESS.getErrorMessage());
        if(data!=null) {
            result.setData(data);
        }
        return result;
    }

    public static ResponseResult errorResult(AppHttpCodeEnum enums){
        return setAppHttpCodeEnum(enums,enums.getErrorMessage());
    }

    public static ResponseResult errorResult(AppHttpCodeEnum enums, String errorMessage){
        return setAppHttpCodeEnum(enums,errorMessage);
    }

    public static ResponseResult setAppHttpCodeEnum(AppHttpCodeEnum enums){
        return okResult(enums.getCode(),enums.getErrorMessage());
    }

    private static ResponseResult setAppHttpCodeEnum(AppHttpCodeEnum enums, String errorMessage){
        return okResult(enums.getCode(),errorMessage);
    }

    public ResponseResult<?> error(Integer code, String msg) {
        this.code = code;
        this.errorMessage = msg;
        return this;
    }

    public ResponseResult<?> ok(Integer code, T data) {
        this.code = code;
        this.data = data;
        return this;
    }

    public ResponseResult<?> ok(Integer code, T data, String msg) {
        this.code = code;
        this.data = data;
        this.errorMessage = msg;
        return this;
    }

    public ResponseResult<?> ok(T data) {
        this.data = data;
        return this;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getErrorMessage() {
        return errorMessage;
    }

    public void setErrorMessage(String errorMessage) {
        this.errorMessage = errorMessage;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }


    public static void main(String[] args) {

        //1.返回正确内容，前端只需要返回码和消息，不需要真实数据 新增数据
        ResponseResult responseResult = ResponseResult.okResult(null);
        System.out.println(JSON.toJSONString(responseResult));
//        ResponseResult.okResult(AppHttpCodeEnum.SUCCESS.getCode()
//                ,AppHttpCodeEnum.SUCCESS.getErrorMessage());

        //2.返回正确内容，前端需要数据
        responseResult = ResponseResult.okResult("123");
        System.out.println(JSON.toJSONString(responseResult));

        //3.返回错误信息
        responseResult = ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        System.out.println(JSON.toJSONString(responseResult));
        responseResult = ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID,"自定义消息");
        System.out.println(JSON.toJSONString(responseResult));

        //4.返回分页信息
        PageResponseResult result = new PageResponseResult(1,10,500);
        ArrayList<String> strings = new ArrayList<>();
        strings.add("123");
        strings.add("456");
        result.setData(strings);
        System.out.println(JSON.toJSONString(result));
    }

}
